I am trying to upgrade to Mountain Lion but the App Store keeps rejecting my password. It is the correct password as I can log in to my account via the internet, and on my phone - I am currently logged in as I am posting this message. I have also tried it a number of times with the same message so it isn't me just making a err each time.
Anyone out there had the same problem that can assist me? Your assistance would be greatly appreciate.
Try to reset or change your password and if that doesn't work it means or that your mac doesn't support Mountain Lion for a specified reason or that apple blocked your account or your mac from upgrading it or that your ID is wrong check it again. Hope I helped